Made with brazed shards of abrasive carbide material, the 63-mm rasp will effectively remove grout lines during a tile replacement project. The semi-circular design allows the blade to cut completely into corners without damaging the opposing material. The brazed carbide design allows this product to grind hard materials such as concrete, brick and dried epoxies and paint. Great for removing thin-set and mortar, repairing grout and removing stubborn caulking and glues. Flush cut arbor design for ease of use in demanding situations.